Stainless Steel Sink Sieves and Strainers

Stainless Steel Sink Sieves and Strainers

Stainless steel sink sieves and strainers are deep-drawn and pressed perforated stainless steel components used to retain solid particles while allowing liquid to pass through in kitchen sinks, commercial catering equipment, industrial process filtration, and water treatment systems. Also known as SS sink strainers, stainless steel basket strainers, SS perforated filter baskets, SS sink waste strainers, SS floor drain strainers, SS drain baskets, SS filter cups, SS Y-strainer inserts, stainless steel colanders, and SS mesh baskets, these parts are manufactured from SS 304 and SS 316 stainless steel by Electrical Accessories India. Supplied to kitchen equipment OEMs, catering equipment manufacturers, industrial filter manufacturers, and water treatment system builders.

Product Overview

SS Kitchen Sink Strainers and Waste Baskets

Stainless steel kitchen sink strainers, SS sink waste baskets, SS drain trap inserts, SS plug-type strainers, and SS chain-plug strainers are used in domestic and commercial kitchen sinks to prevent food particles, grease, and debris from entering the drain system. Manufactured from SS 304 (1.4301) by deep drawing to form a cup or basket, then perforating with 2–5 mm diameter holes on 4–8 mm pitch. Standard sizes: 90 mm, 115 mm, 120 mm, 125 mm, and 150 mm diameter to match standard UK/European waste fitting sizes. Custom sizes for catering equipment OEM sinks manufactured to drawing. Wall thickness: 0.5–0.8 mm SS 304 sheet.

SS Industrial Basket Strainers and Filter Cups

Stainless steel industrial basket strainers, SS Y-strainer baskets, SS pipeline filter elements, SS duplex strainer baskets, SS T-strainer inserts, and SS inline strainer cups are used in industrial pipelines, process plants, water treatment, chemical dosing systems, and irrigation systems to remove solids from fluid streams. These are heavier-gauge (1.0–3.0 mm SS 316) deep-drawn or fabricated perforated cups with fine perforation patterns (0.5–5.0 mm holes) or with welded wire mesh inserts (20–200 mesh). Manufactured to ASME B16.34 pipeline strainer dimensional standards or to OEM drawings. Pressure ratings depend on wall thickness and diameter.

SS Floor Drain Strainers and Gully Baskets

Stainless steel floor drain strainers, SS gully pots baskets, SS floor gulley trap inserts, SS trapped gully baskets, and SS channel drain inserts are used in commercial kitchens, food processing plants, hospitals, car washes, and industrial floors to prevent drain blockages. Manufactured from SS 316 (1.4401) for food and chemical plant floor drains subject to aggressive cleaning chemicals. Deep-drawn conical or cylindrical basket profiles in sizes from 80 mm to 300 mm OD to match standard floor gully specifications. Perforations: 8–15 mm diameter holes to retain large solids. Removable for cleaning without tools.

SS Perforated Sieves and Test Sieves

Stainless steel laboratory sieves, SS analytical test sieves, SS particle sizing sieves, SS separation baskets, and SS perforated test plates are used in quality control, particle size analysis, grain grading, and materials screening in food processing, pharmaceutical, mineral processing, and chemical industries. Manufactured from SS 304 or SS 316 sheet by precision CNC punching or laser cutting to aperture sizes from 0.063 mm (fine mesh equivalent) to 125 mm. Compliance with ISO 3310-2, ASTM E11, and BS 410 test sieve standards. Frames may be fitted with a sealing gasket for stacking sieve towers.

SS Catering Equipment and Food Grade Strainers

Stainless steel catering strainers, SS food-grade filter baskets, SS tea strainers (commercial), SS pasta strainers, SS stock pot strainers, SS vegetable washing baskets, and SS steam table drain inserts are manufactured from SS 304 (AISI 304, 18/8) food-grade stainless steel to NSF/ANSI 2, BSEN 1672-2, and 3-A Sanitary Standard requirements for food contact surfaces. Smooth internal surface finish (Ra ≤0.8 μm), absence of crevices, and full perimeter drainability are ensured in the design. Sized for standard gastronorm pans (GN1/1, GN1/2, GN1/3) or custom OEM catering equipment sizes.

Key Features

• SS 304 for kitchen/food contact; SS 316/316L for industrial and chemical environments
• Deep-drawn seamless construction or fabricated perforated sheet
• Perforation range: 0.5 mm to 25 mm diameter
• Food-grade finish (Ra ≤0.8 μm) available for NSF/3-A compliant applications
• Custom OD, depth, perforation pattern, and mesh insert options
• Compliant with ISO 3310-2, ASTM E11, NSF/ANSI 2, 3-A Sanitary Standards
• Full EN 10204 Type 3.1 material certification
• REACH, RoHS, and food contact compliance available

Material Selection for Different Applications

SS 304 (1.4301) is the standard food-contact grade for kitchen and catering equipment — excellent corrosion resistance to dilute acids, fruit acids, and mild cleaning agents. SS 316 (1.4401) adds 2–3% molybdenum, providing resistance to chloride (from bleach cleaning agents), acetic acid, and saline solutions — specified for marine, offshore, and aggressive chemical environments. SS 316L (1.4404) is the low-carbon weld-compatible grade for welded assemblies in chemical plant service. Grade selection is confirmed at order based on fluid chemistry and cleaning protocol.

Deep Drawing and Perforation Process

Stainless steel sieves and strainers are manufactured by two main routes: (1) deep drawing of solid SS sheet to form the cup/basket body, then CNC punching of the perforations; (2) starting from pre-perforated SS sheet and forming to shape (suitable for thin-wall, large-diameter strainers where deep drawing would shear the perforations). Deep-drawn strainers have superior smooth internal surfaces; pre-perforated sheet strainers are economical for large sizes. Wall thickness 0.5–3.0 mm depending on basket diameter and pressure/load requirement.

Perforation Size and Pattern

Standard perforation patterns: round holes on square pitch, round holes on staggered (60° triangular) pitch, elongated slots, and square apertures. Standard hole diameters: 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, 8.0, 10.0, 12.0, 15.0, 20.0, and 25.0 mm. Open area percentage varies from 20–50% depending on hole size and pitch. Custom perforation patterns for specific particle retention requirements are CNC-punched or laser-cut to drawing. Minimum hole diameter for CNC punching: 1.5× material thickness. Minimum hole diameter for laser cutting: 0.5 mm.

Food-Grade Surface Finish

Food contact surfaces of SS strainers are finished to Ra ≤0.8 μm (electropolished or mechanically polished) per NSF/ANSI 2 and 3-A Sanitary Standard requirements. Ra ≤0.8 μm prevents bacteria entrapment in surface irregularities during food contact service. Electropolishing (removes 10–30 μm) improves both surface smoothness and corrosion resistance by dissolving surface inclusions. All food-grade strainers are degreased, passivated, and bright pickled after forming and polishing.

Mesh Insert Options

For fine filtration requirements below 1.5 mm (the minimum CNC punching limit for standard materials), wire mesh inserts are welded or clamped into the basket frame. Standard wire mesh sizes: 20, 40, 60, 80, 100, 120, 150, 200 mesh (ASTM E11 / BS 410). SS 304 or SS 316 wire mesh is used. The basket frame is deep-drawn or fabricated from solid sheet; the mesh is TIG-welded or crimped into an annular groove in the basket rim. These combination designs are used for pharmaceutical, food, and fine chemical filtration.

Technical Specifications

Material Grades and International Equivalents

Product Types and Variants

Sink drain strainer baskets; floor drain gully baskets; industrial pipeline basket strainer inserts; Y-strainer and T-strainer replacement baskets; deep-drawn perforated cups; pre-perforated sheet formed strainers; wire mesh insert strainers (20–200 mesh); laboratory test sieves; catering colander baskets; gastronorm strainer inserts; custom strainer profiles to OEM drawing.

Applications in Industry

Domestic and commercial kitchen sink strainers; catering equipment drain baskets; food processing floor drain strainers; industrial pipeline strainer inserts; water treatment intake strainers; irrigation and drip system filter cups; pharmaceutical process filter baskets; chemical dosing system inline strainers; car wash drain baskets; laboratory test sieves; grain and seed sizing screens.

Manufacturing Process

1. SS sheet/coil procurement — ASTM A240/BS EN 10088 with EN 10204 Type 3.1 MTC
2. Incoming inspection — grade (XRF), thickness, surface
3. Blanking — disc blanks punched or laser-cut from coil/sheet
4. Deep drawing — single or multi-stage draw to basket cup profile
5. CNC punching — perforation pattern punched to programme
6. Trimming — rotary trim or CNC lathe to depth
7. Deburring — rotary barrel or vibratory deburring; perforation burr <0.05 mm
8. Surface finishing — electropolishing for food-grade; brushing for No.4 finish
9. Passivation — citric acid passivation for food-grade
10. Inspection — dimensional, perforation, surface Ra measurement

Quality Standards and Certifications

Material: ASTM A240, BS EN 10088. Food contact: NSF/ANSI 2, 3-A Sanitary Standard, EU Regulation 10/2011 (food contact materials). Test sieves: ISO 3310-2, ASTM E11, BS 410. Passivation: ASTM A967. ISO 9001:2015 QMS. REACH and RoHS compliance. EN 10204 Type 3.1 MTCs standard.

Why Choose Electrical Accessories India

Electrical Accessories India manufactures SS sieves and strainers at its Jamnagar facility with deep drawing presses and CNC turret punching equipment. We supply standard kitchen and industrial sizes from stock and manufacture custom OEM profiles to drawing. Food-grade electropolishing and passivation are performed in-house. Full material, dimensional, and compliance documentation is standard with every shipment.

Frequently Asked Questions (FAQ)

What SS grade is recommended for kitchen sink strainers?

SS 304 (18/8, 1.4301) is standard for domestic and commercial kitchen sink strainers. SS 316 is specified for commercial kitchens using aggressive bleach-based cleaning agents or for coastal/marine catering facilities.

What perforation size retains most food particles?

3–4 mm diameter holes on 6–8 mm pitch is the most common configuration for kitchen sink strainers, retaining particles >3 mm while allowing rapid water drain-down. For fine particle retention, 1–2 mm holes or mesh inserts are specified.

Are the strainers food-safe?

Yes. SS 304 and SS 316 are approved food contact materials per EU Regulation 10/2011 and FDA 21 CFR for cold food contact. Electropolished surfaces (Ra ≤0.8 μm) comply with NSF/ANSI 2 and 3-A Sanitary Standard hygiene requirements.

Can custom OD strainers be manufactured to fit specific sink or gully models?

Yes. Custom OD, depth, flange dimension, and perforation pattern are manufactured to customer drawing with 3–4 week tooling lead time for new profiles. Sample pieces provided before production release.

What is the minimum order quantity?

Standard sizes: 100 pieces. Custom OEM sizes: 500 pieces minimum. Prototype samples: 5–10 pieces for qualification.

Can wire mesh be incorporated instead of punched perforations?

Yes. Basket strainers with TIG-welded or crimped wire mesh inserts are available for fine filtration (20–200 mesh, equivalent to 850–75 μm aperture). Specify mesh size and material grade (SS 304 or SS 316 wire mesh).

Do you supply replacement strainer baskets for specific OEM pipeline strainer models?

Yes. We manufacture replacement basket strainer inserts for Y-strainers, T-strainers, and duplex strainers in all pipeline ratings and body sizes. Supply OEM model number, pipe bore, and perforation specification for quotation.

Are SS test sieves calibrated to ISO 3310-2?

Yes. We manufacture test sieves with precision laser-cut apertures to ISO 3310-2 aperture size tolerances. UKAS-traceable calibration certificates can be arranged through accredited calibration laboratories.

Equivalent Terms – Multilingual Reference

Related Products and Linked Terms

• Stainless Steel Pressed Parts – Stainless Steel Stampings
• Stainless Steel Support Brackets – Pressed SS Brackets
• Stainless Steel Sink Sieves and Strainers
• Stainless Steel 316 Turned Parts
• Copper Pressing and Copper Pressed Parts
• Brass Stamping – Brass Stamped Parts

Indicative Pricing

Stainless Steel Items: US$ 9.90 per kilogram, CIF USA Port

Prices are indicative and subject to change based on quantity, specification, grade, and market conditions. Contact us with your RFQ for a firm quotation.

Request a Quote

Supply your drawing, OD, depth, perforation pattern, and quantity to receive a technical and commercial proposal within 24 hours. We export to 30+ countries.

Contact us: Send your RFQ with size, grade, perforation, and quantity. We respond within 24 business hours.